Has anyone used NinjaTek Cheetah?

Discussion of brand name filaments (ColorFabb Brand, NinjaFlex, Taulman, etc.)
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LePaul
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Has anyone used NinjaTek Cheetah?

Post by LePaul » August 2nd, 2017, 1:27 pm

https://ninjatek.com/products/filaments/cheetah/

I bought some sample packs (different colors) to try out, since it is supposed to be easier to print with (there's an Ultimaker in the display photo!)

I need to print some small tires for the drive system that keep's BB-8's dome on the body

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Re: Has anyone used NinjaTek Cheetah?

Post by Izzy » August 2nd, 2017, 2:41 pm

I've printed with NinjaFlex and semiflex but not cheetah, yet ;-)
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Re: Has anyone used NinjaTek Cheetah?

Post by LePaul » August 2nd, 2017, 2:48 pm

It's supposed to be a little stiffer than Semiflex to work better with Bowden setups like ours

The printing guidelines seem pretty basic, I just wasn't sure if any changes should be made for retractions (distance/speed)

Code: Select all

Extruder Temperature:  230°C – 240°C 
Platform Temperature: Room temperature – 40°C
Glue or blue painters tape is suggested if not using a heated bed.
Print Speed: 
Top and bottom layers: 30-45 mm/ sec (1800-2700 mm/ min)
Infill speeds: 60-80 mm/ sec (3600-4800 mm/ min)
Layer 2+ use cooling fan if available.

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Re: Has anyone used NinjaTek Cheetah?

Post by Izzy » August 3rd, 2017, 2:25 am

Looking at the spec it has a narrow temperature range but it is likely that it would print from 220,
Speed wise I would stick to 30mm/s for all and reduce retractions to about 1- 2mm enough to take the pressure off.
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Re: Has anyone used NinjaTek Cheetah?

Post by LePaul » August 3rd, 2017, 1:26 pm

I was advised to uncheck Retractions for it by a vendor whose printed something similar on his UM3

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Re: Has anyone used NinjaTek Cheetah?

Post by Izzy » August 3rd, 2017, 2:02 pm

Yes but you may get some drips, another thing to do is add a little sewing machine oil to reduce filament friction in the Bowden tube, the nozzle heat is high enough to burn it off and I've not noticed any real degradation of the printed part.
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Re: Has anyone used NinjaTek Cheetah?

Post by LePaul » August 8th, 2017, 11:02 pm

I saw a post on the UM forum that gave these suggestions...

CURA:
Layer Height - 0.1mm
Print Speed - 45mm/s
Travel Speed - 120mm/s
Combing - All
Print Cooling - 50%, layer 1
Retraction - Disabled
UM2:
Nozzle Temp - 222ºC
Buildplate Temp - 0ºC
Material Diameter - 2.9mm
Material Flow - 103%

I am finding that's too fast, so doing another attempt at 20 mm/sec

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Re: Has anyone used NinjaTek Cheetah?

Post by Anders Olsson » August 8th, 2017, 11:25 pm

I think the ninjaflex cheetah is rather similar to the Ultimaker TPU95A, so it should work okay if you don't print too fast.

I have been printing the TPU95A on the UM3 in a dual print with retractions and it came out okay.
One should increase the retraction distance to avoid oozing though, which I didn't do.

The TPU95A is much less flexible than the "normal" ninjaflex, certainly makes it easier to use in a bowden printer, but also limit's its usefulness a bit.

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Re: Has anyone used NinjaTek Cheetah?

Post by LePaul » August 9th, 2017, 12:49 pm

Well this stuff is fussy

My first try I got this "seam" (maybe bad overhang?) along the wheel...looks like some of my previous orange filament is seen in the bottom layer :)
cheetah.jpg
Try two was a lot slower but it came off the bed. Maybe bed to 50? 60? Like PLA? I had it at 40
cheetah2.jpg
It looks really good until it hits this point...
cheetah3.jpg

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Re: Has anyone used NinjaTek Cheetah?

Post by LePaul » August 9th, 2017, 4:18 pm

Okay, so the key is two things (in addition to what I posted earlier)

Nozzle Temp: 235
Speed: 10 mm/s

Oh..and bed to 45C
cheetah-tire.JPG

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